Former Trump campaign adviser Sam Nunberg changed his course and said he will testify before a grand jury in the Russia investigation on Friday. Nunberg told Bloomberg on Wednesday that he will hand over email communications with Trump, Roger Stone, and eight other witnesses to special counsel Robert Mueller. Nunberg said in his interview with Bloomberg that Trump "never did anything illegal or wrong around me." and added based on questions investigators asked him, "it's my impression that they may have something on him. But perhaps they don't." Nunberg went on an impromptu media blitz on Monday, saying that he would not cooperate with Mueller or testify against Stone.